Sound-box and tone-arm connector.



c. HA. STURTS. QOUNDBOX AND TONE ARM CONNECTD'H. APPLICATION FILED MAR. 5. A191B.

1,291,239, lemma @11.141919 connection for :seeuri'ng sound boxes. which CHARLES F. A. STURTS, OF SAN FRANCISCO, CALIFORNIA.

SOUND-BOX AND TONE-ARM CONNECTOR.

To all whom t may (foncer/z f Be it known that I. CHARLES F. A. STURTS, a citizen of the United States. residing at the eity and county ot San Francisco and State of California, have. invented new and useful Improvements in Sound-'Box and Tone-Arm Connectors, ol which the following is a specification,l

This' invention relates to a sound box and tone arm connector for talking maehines.

One ot the objects ot' the present invention is t0 provide.v a cooperating interlockingry are used in connection with talking maehines, to the-tone, arm or vswinging necke thereof in such a manner that the Sound box may be quickly` and .securely loeked on the neck and as readily removed. Y

Another objeet ot' the invention is to provide a connect-ion which preserves the vibrations peculiar to articulate Speech and niusieal sounds and to a large extent exeludes metallic and diseordant sounds produced b v metallic conneetions` this` being produced in tlie present. instaure by interposing a rubber gaaket and a split ring between the sound box and the tone arm whieh servefas an insulator and also permit tightening ot the joint when the eonneet'ion iS made.

Further objects will lnfreinal'ter appeal'.

Illhe invention eonrsists ol' the parts and the construction and ion'ibination of' parts as hereinafter more t'ullv deseribed and claimed, having reference to the aeeompanying drawings. in which- Figure 1 is a plan view. partly broken` away and partly in section,showing the connectiou formed between the tone arm and tho :sound box.

Fig. 2 ia a perspeetii'e view of the :-;plitl ring.

Fig. il is a side elevation. `bowing the rear .side of tbe loue box and the connection between the tone arnl and the Sound box.

vlielerrinsf to the drawings in detail. A\ iudieates tlieltone arm of a talkiiuf marliine` L the swinging arm or neck tbereol'. and the. sound box. Formed ou the free end ot' the.

' neck ie a bayonet slot: Al. and formed on the,

rear side ol't the sound box ia an annular Specification of Letters Patent.

Patentedun. 14, 1919.

Application filed March 5, 1918. i serial No. 220,445.

j ecting pin 8 whichv is received by the bayonet slot et when connection is made, such as shown 1n Fig. l. nThe rubber gasket interpoaed between the 4Split ring and the tone box proper prevents metallic Contact or con- .neetion between the sound box and the neck of .the tone arm. thus to a large extent exelnding discordant and metallic sounds usually produced where a direct; metallic .contact.' is made. o

The split ringprovided is lcated interiorlyr of the. rubber gasket and expands sligbtl when the neck of the tone arm is inserte thus forming a tight joint and also elimi` nating wear ot the gasket which would take place it' the tone arm was inserted directly in the gasket. :The connectionshown permits the sound box to be quickly applied and locked in position1 due to lthe provision of the pin S and the bayonet slot 4, and it also permits the .sound boX to be quickly removed.l when deired. Its main function, however, ia to prevent metallic Contact be,-

tween the sound box and the tone arm, thus.-

prevent'ing toa large extent the transmission or production ot metallic and other diseordant. sounds.' l

lla ving thus described my invention, what I claim and desire to secure by Letters Patent. iS- y sound box and tone arm connector composed otl a eollar on the sound box. a rubber gasket. seated within the collar, an expani sible ring seated within the gasket, said ring being -l'ormed to receive the tone arm 0 as to be expanded by the latter and in/turn to expand the gasket against. the collar, and meins to seeure the. ring in position.

ln testimony whereof have hereunto Set.

miv hand in tlnpresence 'of two subscribing witneh'es. l

CHARLES li. S'lIlRTS. W itnessseif` JOHN Il. llnlnuNG,

W. W. HEALEY. 

